Search RFC: |                                  
Please support my efforts by ADVERTISING!
Serving a Pleasant Blend of Yesterday,
Today, and Tomorrow™

Vintage Magazines

Electronics World
Popular Electronics
Radio & TV News
QST | Pop Science
Popular Mechanics
Radio-Craft
Radio-Electronics
Short Wave Craft
Electronics | OFA
Saturday Eve Post

Formulas | Data

Electronics | RF
Mathematics
Mechanics
Physics


Calvin & Phineas

kmblatt83@aol.com

Archive | Sitemap

Resources

Articles | Radar
Cogitations
Magazines | AI
RF Museum
Software | Videos
Radio Service
Tech Notes

Entertainment

Crosswords
Humor | Podcasts
Quotes | Quizzes
Tech Comics

Parts | Services

1000s of Listings


About RF Cafe

Software: RF Cascade Workbook | RF Symbols for Office | RF Symbols & Stencils for Visio | Espresso Workbook
Please Support My Advertisers!
Aegis Power | Centric RF | RFCT
Empower RF | Reactel | SF Circuits

Alliance Test | Isotec
ConductRF Phased Matched RF Cables - RF Cafe

Johanson Prototyping Kit - RF Cafe

Anatech Electronics RF & Microwave Filters - RF Cafe
Innovative Power Products (IPP) 90 deg Hybrid Couplers - RF Cafe



Innovative Power Products (IPP) Baluns & Transformers - RF Cafe

Please Support RF Cafe by purchasing my ridiculously low-priced products, all of which I created.

RF Cascade Workbook for Excel

RF & Electronics Symbols for Visio

RF & Electronics Symbols for Office

RF & Electronics Stencils for Visio

RF Workbench

T-Shirts, Mugs, Cups, Ball Caps, Mouse Pads

These Are Available for Free

Espresso Engineering Workbook™

Smith Chart™ for Excel

Emerson Models 501, 502, 504 Schematic & Parts List
November 1947 Radio News

minimum height spacer
November 1947 Radio News
December 1947 Radio & Television News Cover - RF Cafe[Table of Contents]

Wax nostalgic about and learn from the history of early electronics. See articles from Radio & Television News, published 1919-1959. All copyrights hereby acknowledged.

Sam's PhotoFact Emerson Models 501, 502, 504 - RF CafeThis is the schematics and parts list set for vintage Emerson vacuum tube radio models 501, 502, and 504, as they appeared in the November 1947 issue of Radio News magazine. I scan and post these for the benefit of hobbyists and historians seeking such information. As time goes by, there is less and less likelihood that records of these relics from yesteryear's archives will be made available. To the left is the cover page for the Sam's PhotoFact data packet. To the lower right are example of the Emerson Model 502 that appeared on eBay at one time. As with all historical information, it takes someone with a personal interest in preserving the memories in order to fulfill the mission, and I am glad to be a small part of that cadre.

Emerson Models 501, 502, 504 Schematic & Parts List

Emerson Model 502 Vintage Tabletop Radio - RF Cafe

Emerson Model 502 Vintage Tabletop Radio (eBay) - RF Cafe

Emerson Model 502
(eBay images)

Emerson Models 501, 502, 504 Schematic - RF Cafe

Emerson Models 501, 502, 504 Schematic

Emerson Models 501, 502, 504 Parts List - RF Cafe

Emerson Models 501, 502, 504 Parts List


Radio Service Data Sheets

These schematics, tuning instructions, and other data are reproduced from my collection of vintage radio and electronics magazines. As back in the era, similar schematic and service info was available for purchase from sources such as SAMS Photofacts, but these printings were a no-cost bonus for readers. There are 255 Radio Service Data Sheets as of April 30, 2025.

Windfreak Technologies SynthHD PRO - RF Cafe